The purposes of the essay are to discuss the world of desire the Tang short fiction "Pu Fei-Yen", question the love maxim, "One dies without regret if he has a chance to love while he is alive.", and bring up a dialectic idea according to the interaction between Pu,her lover, and her husband. It is not easy to summarize the complicated culture, manners and customs, and norm that are connected with desire in the world with the idea of "the will of the main body". Critics have regarded Pu's going to die calmly as a paragon of the love tragedy constantly. That issue points out part of truth but leaves endless space for discussion. The essay is written to make an examination with established regulations such as the history, patriarchal clan system, society, and so on. A Literary writing, psychological analysis, and a discussion on human folk customs and sex are combined to offer an introspect of life. Maybe the involvement and paradox of desire between two sexes can get close to the ideal of mutual beneficial state through the academic exploration.